<?php
session_start();//必须要在任何HTML输出之前启用
?>
<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>会员注册管理系统</title>
    <style>
        .main {
            width: 80%;
            /*border: 1px solid #dc127b;*/
            margin: 0 auto;
            text-align: center;
        }

    </style>
</head>
<body>
<div class="main">
    <?php
    include 'nav.php';
    ?>
</div>
</body>
</html>